If I need to reset my points, I have enough gems to do so, but it might hurt in the long run where I could increase my Item/Unit Capacity or summon instead.
Any suggestions? Any and all help would be greatly appreciated!

Amadream is a primarily an arena/colo only unit. If you're building her for that, then you would want to prioritize the angel idol effect, self stats, and negating whatever damage/ailments you can with remaining SP. So something like...

70SP - probably resistance against 1 KO attack
10SP - 60% allstats

And then depending on your personal preferences and sphere choices, as well as your decision to omni+3 and (soon) omni+5 her, you would pick from more stats, ailment immunity, and negate crit/ewd.

For other content (FH/GR as a double attack/hp scaling Light nuker) you don't need the AI nearly as much but at the same time, very few of her SP help at all with nuking so it doesn't really need a full build. DoT is actively harmful in GR and in colo you'd usually prefer to use a better sphere/DoT option so I don't think it's a great addition personally. You WOULD, however, probably want to get her 10SP attack parameter limit break 'cuz especially for HP scaling units it's not hard to hit the normal attack cap.

Especially with the light vortex arena upcoming, I would say that your current unlocks (60->80% stats) are fine, just get AI for sure, maybe attack limit break if you want to use her as an off-brand nuker, and decide from there. There's no law saying you need to spend ALL of your SP after all, sitting on 10 or 20 while deciding between two options is fine.